Hi guru's in the house.. I need your help

Whenever I want to save something in my system, be it microsoft document or a movie I want to download with opera, mozilla or chrome, I always see 'not responding,' and then 'close or wait to respond' which will take forever till I close the page.

I have tried deleting and reinstalling , but still the problem is still there.

I use windows defender as antivirus and I still have alot of space in my local disk.



Please help a sister. .. what do I do ?

Thanks